minor #21443 [SecurityBundle]: security.logout.path supports route name (xavierleune)

This PR was merged into the 6.4 branch.

Discussion
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[SecurityBundle]: security.logout.path supports route name

Commits
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a35b5f6 fix(reference): security.logout.path supports route name

Author: javiereguiluz

reference/configuration/security.rst

@@ -508,7 +508,7 @@ the current firewall and not the other ones.
 
 **type**: ``string`` **default**: ``/logout``
 
-The path which triggers logout. You need to set up a route with a matching path.
+The path or route name (cannot start with a `/`) which triggers logout. You need to set up a route with a matching path.
 
 target
 ......